Bulgarian Workers' Social Democratic Party

The Bulgarian Workers' Social Democratic Party (BSDP) was a socialist and social democratic political party in Bulgaria that was active from 1894 to 1903. The party was founded by Dimitar Blagoev, who united the social democratic circles of Tarnovo, Gabrovo, Sliven, Stara Zagora, Kazanlak, and other cities under one party. The Marxist "Partist" nucleus of the BSDP clashed with the reformist "Unionist" faction, which initially opposed turning the social democratic movement into a party. At the First Congress in July 1894, the Unionists became the majority faction within the BSDP. The party began to experience splits in the late 1890s, however, as Blagoev became the chief party theorist. In 1903, the BSDP split into two factions: the Narrow Socialists and the Broad Socialists.